<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>br</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        .bord{
            border: 1px dashed #ee2602;
            width: 90%;
            margin: 20px auto;
        }
        .title{
            font-size: 20px;
            font-weight: bold;
            margin: 20px;
        }
        .introduce{
            font-size: 16px;
            margin: 0 0 20px 50px;
        }
        .red{
            color: red;
        }
    </style>
</head>
<body>
<div class="bord">
    <div class="title">br</div>
    <div class="introduce">
        <pre>段落换行</pre>
    </div>
</div>
<div class="bord">
    <div class="title">演示效果</div>
    <div class="introduce">
        <p style="text-align: center">坚持每一天</p>
    <br/>
        <p style="text-align: center">董新美</p>
    </div>
</div>
<div class="bord">
    <div class="title">代码</div>
    <div class="introduce">
        <pre>
            &lt;p style='text-align: center'&gt;坚持每一天&lt;/p&gt;
        &lt;br/&gt;
            &lt;p style="text-align: center"&gt;董新美　&lt;/p&gt;
    </pre>
    </div>
</div>
</body>
</html>